+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   1730 Marceline (1936 UA) Classification: Main-belt Asteroid          SPK-ID: 2001730 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 38 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2225015310128014 3.323e-08   a 2.78576556331859 8.4256e-09 au q 2.165928460437464 9.2264e-08 au i 9.488193653228608 3.5925e-06 deg node 171.1480314027689 2.1421e-05 deg peri 226.5712724399274 2.2538e-05 deg M 39.90705724541598 7.2412e-06 deg tp 2459012.238082264525 (2020-Jun-11.73808226) 3.3923e-05 TDB period 1698.303384486116 4.65 7.7048e-06 2.109e-08 d yr n .2119762601244131 9.6168e-10 deg/d Q 3.405602666199715 1.03e-08 au   Orbit Determination Parameters    # obs. used (total)      2911      data-arc span      32636 days (89.35 yr)      first obs. used      1931-09-15      last obs. used      2021-01-21      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .45364      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 00:57:43   Additional Information  Earth MOID = 1.18357 au   Jupiter MOID = 2.07752 au   T_jup = 3.275  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 11.98   n/a E2021B10   diameter diameter 15.203 km 0.122 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   rotation period rot_per 3.837 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Behrend, R. (2010) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Aymami, J.M. (2011) Minor Planet Bull. 38, 55-56.] [Brinsfield, J.W. (2011) Minor Planet Bull. 38, 73-74.] [Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.] [Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.] [Klinglesmith III, D.A.; Hendrickx, S.; Madden, K.; Montgomery, S. (2016) Minor Planet Bull. 43, 123-128.] geometric albedo albedo 0.192   0.030 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   SMASSII spectral type spec_B Xe   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002) 1730 Marceline (1936 UA)          Discovered 1936-Oct-17 by Laugier, M. at Nice Reference: DISCOVERY.DB Last Updated: 2003-08-29 Alternate Designations  1936 UA = 1931 RE = 1950 WF = 1952 DR2 = 1954 QA = 1971 JC  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Feb-28 07:36 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin